For every 3 laps that Jackie swims, Ronnie swims 4 laps. During practice, they swam a combined total of 63 laps. How many laps did Ronnie swim during practice?

Find the ratio of x to y.5x = 6y

let jackie swim 3x laps..and ronnie swin 4x laps ..

3x+4x=63

x=9

so ronnie swam 4x

that is 4 multiplied by 9 as 36 !

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